Exporting pdf from book

I quite new in Java scripting and I'm working (or studing) to export pdf from book through a script.

I want to save the pdf in the same paths and with the same name  of the books itself... is it possible?

For what I found

ExportFormat.pdfType,

  File(Folder.desktop + "/name.pdf"), true;

there should be a way ti change or even to ask name and path.

thanks